/****************************************************************************
**
** This file is part of the KD Chart library.
**
** SPDX-FileCopyrightText: 2001 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
**
** SPDX-License-Identifier: MIT
**
****************************************************************************/

#include <KDChartBarDiagram>
#include <KDChartChart>
#include <QApplication>
#include <QtGui>
#include <QtSvg/QSvgGenerator>

class ChartWidget : public QWidget
{
    Q_OBJECT
public:
    explicit ChartWidget(QWidget *parent = nullptr)
        : QWidget(parent)
    {
        m_model.insertRows(0, 2, QModelIndex());
        m_model.insertColumns(0, 3, QModelIndex());
        for (int row = 0; row < 3; ++row) {
            for (int column = 0; column < 3; ++column) {
                QModelIndex index = m_model.index(row, column, QModelIndex());
                m_model.setData(index, QVariant(row + 1 * column));
                /*
                // show tooltips:
                m_model.setData(index,
                QString("<table>"
                    "<tr><td>Row</td><td>Column</td><td>Value</td></tr>"
                    "<tr><th>%1</th><th>%2</th><th>%3</th></tr></table>")
                .arg(row).arg(column).arg(row+1 * column), Qt::ToolTipRole );
                */
            }
        }

        /*
    {
    // show a comment at one data item:
        const int row = 0;
        const int column = 2;
        const QModelIndex index = m_model.index(row, column, QModelIndex());
        m_model.setData(
            index,
            QString("Value %1/%2: %3")
                    .arg( row )
                    .arg( column )
                    .arg( m_model.data( index ).toInt() ),
            KDChart::CommentRole );
    }
    */

        auto *diagram = new KDChart::BarDiagram;
        diagram->setModel(&m_model);
        diagram->setPen(QPen(Qt::black, 0));

        m_chart.coordinatePlane()->replaceDiagram(diagram);

        auto *l = new QVBoxLayout(this);
        l->addWidget(&m_chart);
        setLayout(l);

        /*
    // render chart to a SVG
    QSvgGenerator generator;
    generator.setFileName("/home/kdab/chart.svg");
    generator.setSize(QSize(300, 300));
    generator.setViewBox(QRect(0, 0, 300, 300));
    generator.setTitle(tr("SVG Chart"));
    QPainter painter;
    painter.begin(&generator);
    painter.setRenderHint(QPainter::Antialiasing);
    m_chart.paint(&painter, generator.viewBox());
    painter.end();
    */
    }

private:
    KDChart::Chart m_chart;
    QStandardItemModel m_model;
};

int main(int argc, char **argv)
{
    QApplication app(argc, argv);

    ChartWidget w;
    w.show();

    return app.exec();
}

#include "main.moc"
